Error: Unable to write to /tmp/vbr_rsyncd Permission denied during Vertica copycluster

Products

• Network Observability
• CA Performance Management

Issue/Introduction

When launching a copycluster task using the Vertica vbr.py utility in a DX NetOps Performance Management environment, the process fails during the initialization of the rsync daemon.

This prevents data migration between the source and target Data Repository clusters.

The copycluster command fails with the following error: Unable to write to /tmp/vbr_rsyncd Permission denied

Environment

DX NetOps :: All Supported Versions

Cause

The database administrator user (typically dradmin) does not have write permissions for the /tmp/vbr_rsyncd directory or its contents.

This often occurs if the directory was previously created by the root user or another account during a failed or manual rsync operation.

Resolution

Update the ownership of the temporary rsync directory on the affected node(s).

1. Log in to the Data Repository node as a user with sudo or root privileges.
2. Change the ownership of the /tmp/vbr_rsyncd directory to the database administrator user:
3. bash
4. chown -R user:user/tmp/vbr_rsyncd
   (Note: Replace user with the actual database administrator username used in the environment, such as dradmin).
5. Verify that the user has full read/write access to the directory.
6. Re-run the copycluster command.